An avid supporter of the Nazi invasion and occupation of France, he later supported of the collaboration government established in Vichy. He was soon approached by Vichy and Nazi officials and recruited as a spy and informant into the Gestapo, the secret police force of Germany. Due to him being French, he could easily infilitrate the French resistance groups and report their exploits to the Axis. He joined the partisan cell under Jean-Claude Marsalles and became a radio operator, which served him well as he was able to intercept all communication in and out of the partisan cell.

After another destruction of one of Oberst Wilhelm von Lieder's convoys by the Marsalles cell's convoy destroyers, Logeaux learned from the secret French partisan radio traffic that the Führer himself, Adolf Hitler, and strangly Benito Mussolini, would be touring the city of Saint-Marie on their way back to Berlin after touring the newly-occupied city of Paris. Soon after, Marsalles along with his second in command Pierre LeMieux began planning an assassination attempt that Logeaux reported back to the Nazis. During the parade, Nazi soldiers under Hauptfach Stauffen managed to apprehend and disable the French saboteurs while Logeaux went after LeMieux personally on top of the city's tower. After hesitating to kill LeMieux, the French partisan then used the oppurtunity to use his own weapon to kill Logeaux. While Logeaux failed in killing LeMieux, he was successful in allowing the capture of a majority of the French partisans and preventing the death of Hitler, while Mussolini was allowed to be non-fatally shot.